Question about 2000 Jeep Grand Cherokee
The rpm goes between 900 and up to 1200 at idle. No engine light no codes on scan tool. Fuel mileage down to 10 or 11 milles per gallon according to message center.
Look under hood, check for o hissing sound(means you have foung a vaccum leak. take a small propane torch/without lighting torch open valve and sweep along base of intake manifold when idle smoothes out you've found leak.
Posted on Nov 25, 2008
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Posted on Jan 02, 2017
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